Working out at the gym is a great way to complete or get your day started. Gym workouts can be varied, so you need a versatile shoe to confidently take on each different aspect of your workout and the New Balance 877 is just the perfect shoe. Upper: Mesh upper with synthetic overlays. No sew material application eliminates irritating seams that can cause hotspots and blisters. Textile lining. Stretch comfort heel collar. Midsole: Sleek molded midsole. Cardio Comfort system features a removable, dual-density insert and a super supportive footbed. 7mm heel to toe offset. Outsole: Sleek molded rubber outsole with pivot point.